package 关于重写Object类的equals方法相关问题;

public class Student_2 {
     int id;
     String name;
     int age;
     String score;

    public Student_2() {
    }

    public Student_2(int id, String name, int age, String score) {
        this.id = id;
        this.name = name;
        this.age = age;
        this.score = score;
    }
}
